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On Hydrodynamic Aspects of Ship Collision with Rigid or Non-Rigid Structures

AuthorsBlok, J.J., Dekker, J.N.
Conference/JournalOffshore Technology Conference (OTC), Houston, Texas, USA
Date1 May 1979
Throughout the history of fendering system design assumptions have been made on the magnitude of the hydrodynamic added mass of ships when hitting a fendering system. This added mass is known to be dependent upon a number of variables, such as ship shape, ship size, bottom clearance, spring constant of the fendering system, mode of collision, etc. The assumptions to be made for the fendering design are in general not supported by a theory backed by extensive experiments. In view of the increasing amount of structures of various kinds in several offshore areas and the increasing transport of dangerous cargoes, the demand for reliable design methods gets stronger. It is the purpose of this paper to give more data-based support to the design of fendering systems by means of the presentation of an extensive test series conducted at the Netherlands Ship Model Basin. Correlation with existing theories are being discussed.

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